Sight for firearms



S E FISCHER SIGHT FOR FIREARMS.

(No Model.)

,452. Patented June 2-8, 1898.

lNvaNToR WiTNEssEs I UNITE STATES PATENT OFFICE.

SOPl-IIAN E. FISCHER, oF HAYWARD, oALIFoENIA.

SIGHT FOR FIREARMS.

SPECIFICATION forming part of Letters Patent No. 606,452, dated June 28, 1898.

' Application filed April 16, 1897. Serial No. 632,475- (No model.)

the art to which it most nearly appertains to make, use, and practice the same.

The object of my invention is to provide a simple and easily-adj usted back sight for firearms that can be operated to raise or lower the sight and regulate the range of the projectile while the gun is held at the firing position and without removing it from the shoulder; and it consists of the parts and devices hereinafter specified.

Referring to the accompanying drawings,

Figure 1 shows a longitudinal section of the back sight and of that portion of the barrel of the gun at the point of its application. Fig. 2 is a perspective view of a portion of the barrel and stock of the gun, showing the sight in partial elevation; and Fig. 3 is a separate view in perspective of the sight-elevator.

Let A represent the barrel, and B the stock, of any of that class of firearms termed and known as small-arms. The sight to which this invention relates is essentially a back sight and is located at some point on top of the barrel near its rear end, preferably just above the point where the barrel rests, within reach of the outreached hand of the user when the gun is held in the firing position.

0 is a flat spring the forward end of which is secured upon the barrel of the gun by suitable means,while its rear end is turned up so as to form a short leaf d, in the upper end of which is formed a sight e. The length and elasticity of the spring G can be regulated as desired, but usually the length of an inch and a half or two inches is sufficient. 7

Just in front of the leaf d a slot f is made in the spring-plate 0, extending a short distance along its mid-line and lengthwise with the plate.

The sliding elevator (represented at Fig. 3)

is adapted to fit and move in this groove. It consists of a tapering block h, having on one side a shank 2, extending outward in line with its bottom, and a roughened or cross-hatched" thumb-piecej at the outer end of'the shank."- The block h has a series of angular ridges, forming notches 0 0, made on its upper inclined face or edge. These notches or ridges are made with inclined sides, the angle of which constitutes obtuse angles, and at the bottom of the incline is an enlargement or boss 0, which serves as a stop, as hereinafter explained. This elevator is adapted to fit and slide upon the upper face of the barrel with its highest end forward. The rear or free end of the spring 0 is lifted, so as to permit the highest end of the elevator to pass under the end or sight-leaf d and enter the slot f in the spring, while the shank 1; extends underneath one side of the spring, so as to carry the roughened or cross-hatched thumb-piece j at the edge of the barrel, as shown at Fig. 2. The thumb-piece j is bent downward to engage an oblique face q of the gun-barrel, and it also has an inner upwardlyextending shoulder r, which opposes the side of the spring 0, and thus serves to hold the elevator against lateral displacement as it is 'moved along in the slot.

By pressing upon the thumb-piece j the elevator can be moved along the slot back or forth, as desired, and its movement will cause the end piece or leaf d to ride over the notches and either raise or lower the sight, according to the direction in which it is moved. The lug 0 at the lower end of the elevator serves as a stop to retain the sight at its lowest position when the elevator is fully moved forward. A bend or hump s is made in the spring on the shank side of the slot to accommodate the shank when the elevator is moved forward and drops the sight end of the spring in the lowest notch of the elevator.

If desired, a slight groove could be made in the upper face of the barrel for the elevator to move in; but the pressure of the spring and. the slot will usually form a sufficient guide for the elevator.

It will now be understood that the person using the firearm can adjust the sight with his thumb while the gun is held in the firing position, because his advanced hand will grasp the stock sufficiently near the sliding elevator to permit the mere extension of his thumb to reach the thumb-piece j.

Having thus described my invention, What I claim, and desire to secure by Letters Patout, is

1. A gun-sight consisting of a spring having a sight at one end while its opposite end is secured to the barrel of the gun; a longitudinal slot formed in said spring; a hump or bend in the spring on one side of the slot; an inclined slide or elevator having its upper inclined edge provided with notches or stops adapted to move in the slot; a lug or knob at the lower end of the incline; a shank adapted to pass under the spring on one side of the slot, and a thumb-piece at the outer end of the shank, substantially as described.

2. A gun-sight comprising a spring having a sight at its rear end, while its front end is fastened to the barrel of the gun, said spring SOPI-IIAN E. FISCHER.

I Witnesses HARRY J. LAsK,

CHAs. J. A-RMBRUSTER. 

